Edge-tool grinder.



Patehfd Feb. 5, 190|. M. L. KEYES.

EDGE TOOL GRINDER.

(Application led Dec. 5, 1899.)

2 Sheets-Sheet I.

(No Model.)

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No. 667,32l. Patentedeb. 5, I90I. M. L.. KEYES.

EDGETUOL GRINDER.

(Application filed Dec. 5, 1899.1

2 Sheets-Sheet 2.

(No Model.)

ML m MTNEssEs UNITED STATES PATENT FFICE.

MARTIN L. KEYES, OE CARTHAGE, NEw YORK, As'sIeNoR To FRANKLIN E.ROBINSON, OF SAME PLACE.

EDG E-TOOL GRINDER.

SPECIFICATION forming part of Letters Patent No. 667.321, dated February5, 1901.

Application filed December 5, 1899. Serial No. 739,322. (No model.)

To a/ZZ whom t may concern:

Be it known that I, MARTIN L. KEYES, a citizen of the United States ofAmerica, and a resident of Carthage, Jefferson county, New York, haveinvented certain new and useful Improvements in Edge Tool Grinders, ofwhich the following is a specification.

My invention relates to an edge-tool grinder; and it consists in themechanism hereinafter more fully pointed out and claimed.

The purpose of my invention is to furnish a machine forsharpening-edgetools, and particularly to sharpen rotary cutters, suchas gangs of saws and like cutting edges.

In the drawings, Figure 1 is a perspective view of my machine. Fig. 2 isa front or side view of Fig. 1. Fig. 3 is an end view of Fig. 1. Fig. 4is a section view on line A B of Fig. 2. Fig. 5 is a section view online C D of Fig. 4. Fig. 6 illustrates details of construction of theshaft-adjuster, broken lines indicating parts removed. Fig. 7 is adetail perspective of the shaft, showing the alining mark thereon.

In the drawings similar reference characters refer to correspondingparts in the several views.

In the figures illustrated in the drawings I have represented agang-cutter formed of independent cutterblades with serrated or toothedges mounted in conical shape where the cutting teeth or edges areplaced in substantially the same axial alinernent for cutting inclinesurfaces. I, however, do not intend to limit myself to this conical formof cutters, as they may be made in other forms and shapes, so long asthe series of cutting edges are required to be in the same alinement orI can sharpen any straight cutting edge.

To avoid unnecessary details and repetition constituting the componentparts of my machine, I will proceed to name and partially state thefunctions of the parts and will then more fully describe the workingoperation of the same.

In the drawings, 1 is the frame. 2 is the bedpiece, 3 the central groovein the bed-piece, and 4 4 dovetailed groove -flanges 5 is the slide,provided with dovetailed surfaces. 6 6

1 ed on shaft 16.

are the dovetailed edges on the slide. 7 is a longitudinal screw, and 8a Wheelor crank-handle on the Screw for turning the same, the screwbeing supported at its ends in bed-piece 2 at 9 and is held from endthrust by Washer or nut 10. The screw 7 Works in slide 5in screwthreadedopening 11, the parts being arranged to horizontally move slide 5, whichcarries in suitable bearings rotary grinder 12, to which power isimparted by pulley 13, keyed or splined to shaft 14 for imparting arotary motion to the rotary grinder.

For moving the edge of the tool to be sharpened into the line traveledby the rotary grinder I provide an adjusting frame, on which in thisinstance I mount cutters or series of saws or cutting edges, which intheinstance shown are conical shaped for cutting an incline face. Thetool to be ground in the instance illustrated in the drawings, 15 iSmount- This shaft is provided with a straight line marked on itsdiameter for guiding the cutters on the shaft'to be ground.

The ordinary splined seat in the opening in the cutter is centered onthis line, and when the cutters are thus mounted they are clampedrigidly to the shaft by screw cap S on the shaft, so that the cuttersare held rigidly to the shaft. The shaft and cutters are capable ofbeing adjustably rotated, which revolve in adjustable bearings 17, whichcarries at both ends of the shaft a yoke 18. (Best illustrated in Fig.4.) The yoke 18 is supported by piv- Otal bolts 19 19, passing throughflanges and supporting the yoke, so that yoke 18 swings on pivot 19. Theadjustable box 17 is pivotally supported in the frame at 20, Fig. 4.

For adjusting the edges of the tool to be ground into position so thatthe cutting edges are in alinement with the rotary grinder I providesliding incline boxes 21, constructed to engage and slide in dovetailedflanges 22 at each end. The inclined Sliding boxes are adjusted throughscrew and hand-Wheel 23 at each end of the tool to be ground.

For vertically elevating the tool to be operated on I provide verticalslides 24, which are gibbed to the frame at 25, Figs. l and 4, and areoperated by hand-screws 26, operated in a well-known manner. Thevertical slides IOO A which secures a nicety of adjustment.

can be adjusted, together with the incline slides, so as to bring thecutting edge into proper alinement for being operated upon.

For accommodating circular cutters having a series of cutting edges andto accommodate circular cutters of a more or less number of cuttingedges I provide templet or disk 27, which is provided on its peripherywith a numberl of serrated teeth or notches corresponding to the numberof teeth to be sharpened, and these templets or disks can be placed onthe shaft and held from rotating by being made .to rotate with theshaft, thereby securing a large range of rotary cutters with independentrows of teeth or cutting edges. I mount on the yoke a bracket 27, whichsupports the spring-catch 29., having serrated edges to engage the edgeson the disk, so that by raising the spring-cz'L-tch the rotary cutterscan be rotated at regular inter` vals corresponding with the number ofcutting edges to be operated on. By using a proper holder a singlestraight cutting edge can be brought into contact with the rotarygrinder and sharpened equally, as with the rotary cutters having aseries of cutting edges.

Having described the mechanical construction of my invention and definedthe names of the parts, I Will now mention its opera-tion.

I place the circular cutter l5 in the machine and adjust the first rowof cutter-teeth into proper alinement to be engaged with the rotarygrinder, the rotary grinder being in motion by tu rning screw 7, throughthe operation of the crank arm or handle 8. The rotary cutter and thebox in which it is mounted are driven forward, While the rotary cutterruns in contact with the cutting edges, making a complete and perfectalinement of the cutting edge. When one of the cutting edges has beenthus sharpened, I lift spring-catch 2E) and turn the rotary cuttersonenotchmfhich brings the cutting edges to be operated on in properalinement to receive the grinding action of the rotary grinder', andthis process is repeated until the cutting edges are all suitablysharpened.

By providing disks With serrations on their peripheries corresponding tothe number of teeth rotary disks having any number of cntting edges canbe sharpened. The operation of adjusting the cutting edge to the trackof the rotary grinder is brought into alinement by the operation of thevertical and incline slides operated by screws and hand-wheels, Foradjusting endwise shaft 16 I provide pivoted yoke d, Fig. 6, pivotcd atd d', which receives and carries screw f with handle 'p for turning thescrew, shown on the right-hand end of screw f. The end of screw fengages the end of shaft 16 and holds the saine from longitudinalmovement when the cutters are adj usted into alinement for the purposesof being sharpened, before described.

What I claim as new, and desire to secure by Letters Patent, is

l. In combination, in a cutter-sharpening machine, a frame -havingaWay,a reciprocating head in said Way, a rotary grinder carried by saidhead, means for reciprocating the head, a pair of independentlyvertically andlaterally adjustable supports carried by said frame, meansfor effecting said adjustments, independently vertically andhorizontally rockable shaft-holders carried by said supports and a shaftmounted therein at its end portions and adapted to receive thecutter-disks to be sharpened by said grinder, substantially asdescribed.

2. In a cuttersharpener, the combination of a frame, a reciprocatinghead mounted thereon, means for reciprocating said head in a fixed path,a rotary shaft mounted in said head and lprovided with a rotary grinder,a pai-r of independent vertically-movable supports confined to saidframe beneath the path of movement of saidgrinder, means forindependently adjusting said supports, a pair of independent blocksconfined on said supports, respectively, and independently adjustablethereon laterally toward and from the path of reciprocation of saidgrinder and provided with independent adjusting means, shaft-holdersmounted on said blocks, a shaft carried by said holders and adapted toreceive toothed disks for sharpening, means to lock the disks on saidshaft, and means to normally hold the shaft against rotation and permitstep-by-step rotation thereof to regularly present the teeth of thedisks to the grinder, substantially as described.

3. In a machine of the character described, the combina-tion of a frame,a reciprocating head thereon provided With actuating means, a rotarysharpening-tool carried by said head and provided With actuating means,supports inde-pendently adjustable laterally and vertically with respectto the path in Which said tool reciprocates, adjusting mechanisms forsaid supports, respectively, independent shaft-holders, -each having auniversal mountin-g on its support, a shaft resting in said holders andadapted to receive the series of toothed disks to be presented to saidtool, means for clamping the disks together' on the shaft, a templetrigid on the shaft, and a spring-lock carried by one of said holders tonormally hold the shaft and templet against rotation and permit thestep-by-step rotation thereof, substantially as described.

4. In a machine of the character described, the combination of a frame,a sharpening-tool having a reciprocating carrier movable on the frame ina fixed path, operating means, a-shaft, independently vertically andlaterally adjustable supports having holders to receive the shaft ends,whereby the vertical and horizontal position of the shaft can be vari-edand its angle from either end can be varied universia-lily from the pathof reciprocation of said tool, 'said shaft adapted to receive thetoothed disks to be sharpened, means to clamp the disks on the shaft,and

IOO

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'means normally holding the shaft and disks against rotation andpermitting step-by-step rotation thereof, substantially as described.

5. In a machine of the character described, the combination of a frame,a sharpening-tool and its operating means, a shaft adapted to receivethe toothed disks to be sharpened, means to clamp said disks together onsaid shaft with their teeth alined, a templet on one end of the shaft,holders for the shaft ends, adjustable supports for the holders, abracket, and a toothed spring carried by said bracket and normallyengaging the templet to hold the same and the shaft and disks againstrotation, and whereby the disks and shaft can be turned step' by step topresent the series of teeth in succession to said tool, substantially asdescribed.

6. A frame having a horizontal dovetailed way with a central depression,a screw arranged longitudinally throughout said depression and providedwith means for rotating the same, a head having a dovetailed basemovable on said way and a nut in said depression receiving said screw, arotary sharpening-tool carried by said head and provided with means forrotating the same, a shaft having means to clamp a series of tootheddisks thereon with their teeth alined for sharpening by said tool,manually-operated locking means normally holding said shaft and disksagainst rotation and permitting step-by-step rotation thereof tosuccessively present the rows of teeth to said tool, and independentlylaterally and vertically adjustable holders for the shaft ends providedwith separate adjusting means, substantially as described.

'7. In combination, a frame, a sharpeningtool mounted. thereon, saidframe provided with a pair of parallel vertical ways, a pair of separateverticallyadjustable supports confined to said ways, and provided withadjusting means, said supports provided with top downwardly andoutwardly inclined ways, blocks adjustable longitudinally of saidinclined ways, respectively, and provided with independent adjustingmeans, horizontallyturnable frames pivotally mounted on said blocks,respectively, vertically-tiltable shaftholders pivotally mounted to saidframes, respectively, and a shaft at its ends mounted in said holders,said shaft adapted to receive the series of toothed disks to besharpened and provided with means for securing the disks thereon,substantially as described.

Signed by me at Carthage, New York, this 24th day of November, 1899.

MARTIN L. KEYES.

Witnesses:

C. HERBERT WILSON, PHEBE A. TANNE-R.

